#!/bin/bash

# 1 means we go via mailchannels
# 0 means we go via relay.gocloudserver.com

# resulting code
# 0 we will skip mailchannels
# 1 we will deliver as no match found go mailchannels
# 2 mx record cannot be resolved to any ips go mailchannels
# 3 ipv6 mx record detected go mailchannels
# 4 mx is ip address go mailchannels
# 5 domain has no MX record but valid ip

IP1=$(dig +short $1 mx | sort -n)

FOUND=$(echo -e "$IP1" | grep -vE 'hotmail|olc.protection.outlook123.com' | grep -cE 'asdsdsdsdsd.com|outlook123.com')

if [[ "$FOUND" -ge 1 ]]; then
echo -e "0 $1" >> /opt/setest4.log
exit 0
else
echo -e "1 $1" >> /opt/setest4.log
exit 1
fi